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(No Model.)

0. L. NEISLER.

HARROW ATTACHMENT FOR GULTIVATORS. No. 371,619. Patented Oct. 18,1887.

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UNITED STATES PATENT rrrcE.

OSCAR L. NEISLER, OF INDIANAPOLIS, INDIANA.

HARROW ATTACHMENT FOR CULTIVATORS.

SPECIFICATION forming part of Letters Patent No. 371,619, dated October 18, 1887.

Application filed February 21, 1887. Serial No. 228,280. (No model.)

To all whom it may concern.-

Be it known that I, OSCAR L. NEIsLER, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Improvement in Harrow Attachments for Cultivators, of which the followingis aspecification.

My invention relates to improvements in that class of attachments which are used to convert a wheelcultivator into a harrow by removing the ordinary wide shovels and substituting for each of them a frame carrying one or more usually three) narrow teeth.

The object of my invention is'to so construct this frame that it will be readily adjustable to different inclinations with the shank of the cultivator.

The further object of my invention is to so construct the frame that the points of the teeth may be raised and lowered vertically, and yet retain the perpendicular position of said teeth.

Iattain these objects in the construction shown in the accompanying drawings, in which- Figure 1 is a perspective View of my improvedattachment; Fig. 2, an elevation showing different positions of the teeth. Fig. 3 is a vertical section on lineA B, Fig. 1, showing the mode of adjusting the frame upon the culiivator-shank. Fig. 4 shows in perspective the device for adjusting and securing the parts of the frame when raising and lowering the teeth.

In the above figures, a represents a portion of the shank of a cultivator.

b b are two clamps, crescent shaped in section, held in position on shank a by a bolt, 0. The main body of the attachment or block d is held against clamp 12 by the same bolt 0, the contact surface of the block (I being con caved to coincide with the convex surface of clamp b. On said concaved surface are several ridges, c e, which project into grooves f f, in the convex surface of clamp b. Block 61 d and clamp b are thus held rigidly upon each other in whatever position they may be placed. Block (I and clamps b I) being slotted,as shown, for the passage of the bolt 0, it has freedom of movement for changing the relative position of these parts.

The middle portion of the block dis adapted to receive a tooth-piece, g, to which is secured the middle tooth, h. Tooth-pieceg is secured to block (I by two small bolts, or by a bolt and wooden pin, as preferred. Each end of block cl has a projection, it, which enters the socket l on the arms t i, as fully shown in Fig. 4.. These arms are preferably of different lengths, are rights and lefts of each length, and are adapted to receive harrow'teethjj at the ends opposite the block d. The projection It has three recesses, m, on each of opposite sides, into which fit corresponding projections, 12, in socket Z. Bolts 0, which also act as pivots, secure the arms to block (Z. It is readily seen that the outer ends of arms 1' 1" may be easily raised or lowered by changing the position of projections a in notches m. If projections 12 be placed in the middle notches in on both front and rear, armsz' t" will remain horizontal. If projection n be placed in lower notch m in front and upper notch in in the rear, the outer end of arm 2' will be raised. Ifprojectionabe placed in upper notch m in front and lower notch min the rear, arm 1' will be lowered. The middle tooth, h, is straight, as shown. The other teeth, 2' i, are twisted into moldboard shape, the twist commencing near the bottom or cutting-edge and gradually turning to the connection with the arm at the top. This gives the full cutting-surface at the bottom and greatest strength at the top, where it is required. The twist also aids in turning and stirring the soil.

In Fig. 2 is shown an arrangement of the arms by which all three teeth are brought into the same straight line, as would appear in a plan of the attachment. The middle tooth, h, is unchanged. A short arm, t, is placed on one end of the block d. The arm 2', placed on the opposite end, is of sufficient length to set tooth j as far forward of tooth h as j is in the rear of h. By this arrangement the teeth are brought into a straight line at an angle with their direction of movement when in operation,

and they free themselves of stalks and debris easier than the ordinary arrangement shown in Fig. 1.

In Fig. 2 is also shown the manner of ad justing the arms and teeth for cultivating the sides of ridges in which corn has been planted, commonly termed listed corn. In this adjustment the middle tooth, h, remains unchanged. The rear'arm, i, is turned around on pivot 0 the space of one notch m until it is dropped into the position shown in dotted lines. This necessitates an adjustment of the tooth j to keep it perpendicular, which is accomplished by a series of holes, 19, for the upper bolt or pin, which connects the tooth with the arm. Forward arm, i, is raised one notch and the tooth j adjusted in the same manner. Tooth j is thus brought below the horizontal plane of tooth h and tooth j as far above it, and the attachment is adapted to the shape of the ridge intended to be cultivated. By using arms of different lengths it is evident that the attachment may be brought into any shape desired to suit the incline of the surface to be cultivated.

The inclination of the entire attachment may also be changed by the adjustment shown in Fig. 3. Bolt 0 is loosened, block d is moved the desired number of notches on clamp b, the bolt tightened again, and the attachment may take the position in which the shank is shown in dotted lines.

When folding the attachment for shipment, the upper bolt in each tooth is removed, the middle tooth turned backward, and the lateral ones forward (the bearing in the arms allowing free movement in either direction) into the position shown in dotted lines-in Fig l.

I am aware that it is not new to provide cultivators with adjustable teeth, and do not broadly claim such construction, but limit the same to the specific construction and arrangement of parts hereinbefore described.

What I do claim, and desire to secure by Letters Patent, is-

1. In a cultivator attachment, the block (1, provided with a concave serrated base, in combination'with the clamp I), having a sen rated convex surface, the holding-bolt c, and

shank a, to adapt the cultivator-teeth for adjustment to different angles with the shank, substantially as set forth.

2. In a cultivator attachment, the block d, adjustable to different angles with the supporting-shank, as specified, in combination with the adjustable arms i and 2', attached to each end of said block and adapted to support and carry the adjustable teeth, substantially as set forth.

3. In a cultivator attachment, the adjustable block d and arms 1' and 6, adj ustably attached to the ends of said block, in combination with the teeth j and j, adjustably attached to the ends of said arms and adapted to fold up when desired, substantially as set forth.

4. In a cultivator attachment, the combination of the block d, provided with a projection, is, at each'end, having notches m, and a securing-bolt, with the tooth-carrying arms provided with socket Z, and the projections 12, adapted to allow the position of the arms to be changed with relation to the block, substantially as set forth.

5. In a cultivator attachment, the adjustable block d, provided with a bifurcated forward projection, in combination with the shoe 9 and tooth 72, arranged to hold said tooth in any desired position, substantially as shown and described.

6. In a cultivator attachment, the combination, with the shank a, of the adjustable block (1, arms i and i, the tooth seats, and their attached teeth, all arranged and adapted to allow all of'said teeth to be brought into a line diagonal to the line of draft, substantially as shown and described. i

OSCAR L. NEISLER.

WVitnesses:

E. E. SICKLER, FRANK A. JACOB.

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